Research On Application Of Traffic Engineering Based On MPLS

Traffic engineering technology is born to answer to the requirements of telecommunication and computer science community, which need the networks must be not only adapt to the general data transmission but also able to apply to real-time transmission of data streams,especially the audio and video data stream transmission.By using traffic engineering techniques,we can achieve the intelligent applications of network resources and fulfill active and flexible responding to the changes of demands in web services.There are two key factors of the traffic engineering application,which are the restoration and load balancing of network.The next generation of camp network requires the broadband networks with media integration,interoperability and real-time cooperation to be able to support the transmission of voice and video. How to further extend the service types of campus network and improve the utilization of network resources on campus have become the most important issues which people concerned.As an old way to solve the problem,IP protocol,a connectionless protocol,try its best to meet the requirement of users,however,lack of an effective management tool for traffic and network bandwidth can only lead the campus IP network to network congestion which can not guarantees the development of campus network application.So if we do not adopt a new technical means to improve the campus network environment, the next generation of the campus network will be inevitably delayed.Through the adopting of traffic engineering technology,the ideal solution is to strictly control the distribution of campus network resources by transferring the flow of blocking link to the links comparatively free.Therefore a campus network combining traffic engineering can be fulfilled through the connection-oriented technology,such as ATM and so on.However,a mixed technical network system is too complicated and difficult to carry out.The best way of achieving traffic engineering is to be based on MPLS protocol within pure IP networks.The development of the campus network is in an urgent need for a network designed in traffic engineering to create a stable network with lower cost,which can contribute to the network resource management of flow requirements.According to the trend and demand of the development of campus network described above,this paper has adopted the traffic engineering technology to achieve the increasing of utilization rate of the campus network.Meanwhile,in order to further improve the campus network,this paper has fulfilled FRR protection mechanism based on MPLS-TE-level.The main research of this paper is shown below:Firstly,combining of theory and practice,through analysis and comparison of the following three methods of traffic engineering,the core routers network,overlapping networks(IPOA),the MPLS core network,this paper has chosen MPLS as a means of achieving traffic engineering of campus network.Secondly,this paper has generally introduced the technology of the MPLS and Traffic Engineering Architecture based on MPLS, especially focused on the structure of MPLS-TE model,protection mechanisms,routing algorithms.After the modeling and simulation in ordinary IGP Environment and MPLS-TE environment network by using OPNET,this paper has proposed a solution of traffic engineering,through the comparisons of the performance in the two environments.Finally,this paper has carried out the implementation of partial function and protection mechanism of MPLS-TE in the campus network in order to appraise this solution.Through the analysis of the results of simulation and tests,this paper has successfully proved that the traffic engineering has its unparalleled advantages in enhancing the effective utilization of the campus network links and consummating the campus network protection mechanism.